public void EncryptMessage(byte[] message, out byte[] encryptedBuffer)
{
encryptedBuffer = null;
SecPkgContext_Sizes ContextSizes = new SecPkgContext_Sizes();
if (QueryContextAttributes(ref _hContext, SECPKG_ATTR_SIZES, out ContextSizes) != SEC_E_OK)
{
throw new Exception("QueryContextAttribute() failed!!!");
}
MultipleSecBufferHelper[] ThisSecHelper = new MultipleSecBufferHelper[2];
ThisSecHelper[0] = new MultipleSecBufferHelper(message, SecBufferType.SECBUFFER_DATA);
ThisSecHelper[1] = new MultipleSecBufferHelper(new byte[ContextSizes.cbSecurityTrailer], SecBufferType.SECBUFFER_TOKEN);
SecBufferDesc DescBuffer = new SecBufferDesc(ThisSecHelper);
try
{
if (EncryptMessage(ref _hContext, 0, ref DescBuffer, 0) != SEC_E_OK)
{
throw new Exception("EncryptMessage() failed!!!");
}
encryptedBuffer = DescBuffer.GetSecBufferByteArray();
}
finally
{
DescBuffer.Dispose();
}
}
public void SignMessage(byte[] message, out byte[] signedBuffer)
{
signedBuffer = null;
SecPkgContext_Sizes ContextSizes = new SecPkgContext_Sizes();
if (QueryContextAttributes(ref _hContext, SECPKG_ATTR_SIZES, out ContextSizes) != SEC_E_OK)
{
throw new Exception("QueryContextAttribute() failed!!!");
}
MultipleSecBufferHelper[] ThisSecHelper = new MultipleSecBufferHelper[2];
ThisSecHelper[0] = new MultipleSecBufferHelper(message, SecBufferType.SECBUFFER_DATA);
ThisSecHelper[1] = new MultipleSecBufferHelper(new byte[ContextSizes.cbMaxSignature], SecBufferType.SECBUFFER_TOKEN);
SecBufferDesc DescBuffer = new SecBufferDesc(ThisSecHelper);
try
{
if (MakeSignature(ref _hContext, 0, ref DescBuffer, 0) != SEC_E_OK)
{
throw new Exception("MakeSignature() failed!!!");
}
//SSPIHelper.SignAndVerify(ref _hClientContext,ref hServerContext,ref DescBuffer);
uint EncryptionQuality = 0;
VerifySignature(ref this._hContext, ref DescBuffer, 0, out EncryptionQuality);
signedBuffer = DescBuffer.GetSecBufferByteArray();
}
finally
{
DescBuffer.Dispose();
}
}
public static extern int QueryContextAttributes(ref SECURITY_HANDLE phContext,
uint ulAttribute,
out SecPkgContext_Sizes pContextAttributes);
